I followed the official sticky guide to creating a private server, but It's horribly bugged. There's empty strings on NPC names, dialogues, in-the-middle-of-the-screen messages, menus, etc. Also I can't summon my pet, I've put it into the formation thingy, I can see it's hp/mp/exp window on my screen, but when I use the summon pet skill, nothing happens.

Hmmm the only empty strings I had on mine were some custom NPCs and the KTS NPCs which were easy enough to shut off and or fix depending on the situation.

I didn't have any empty string system messages or anything like that.

Lot's of bugs usually means a server file client miss match aside from those custom NPCs which are not in the English string resource because they are not English NPCs, and that is why they turn out empty.

One thing tho, I'm using an US client with the Philippines Sframe.exe, as stated in the guide. Also I once accidentally used the regular launcher, it started patching of course, but I shut it down as soon as I can. Maybe even tho the update was canceled, some of the files remained "newer"? I'll reinstall to make sure.